Rockwell Automation 150 MNL/SMC DIALOG+/APP-PROD GUIDE - Manual (Page 96)

4-14 Application Profiles for the SMC Dialog Plus Controller
Figure 4.13 Palletizer with Dual Ramp Start
Problem: A palletizer moved cereal boxes through a packaging
process to a shrink wrap machine. Across-the-line
starting caused unwanted product spillage, as well as an
interruption of production due to the uncontrolled torque
from the motor on start-up. Since several types of
cereals, in different size boxes, were produced on the
same line, the ability to match the acceleration ramp to
the cereal was desired. The facility was standardized on
Allen-Bradley’s Motor Control Centers. Therefore, the
installation of the soft start in an MCC plug-in bucket
was required.
Solution: The SMC Dialog Plus controller was installed, furnishing
a controlled acceleration, reducing the shock to the load,
and eliminating product spillage. The Dual Ramp Start
feature allowed the controller to be programmed with two
separate acceleration ramps, more closely matching the
motor acceleration with the cereal produced. The SMC
Dialog Plus controller was installed in a Motor Control
Center plug-in bucket, making the packaging attractive to
the customer and eliminating the need for a stand-alone
enclosure.
480 Volts
1-1/2 HP
Motor